Netcom NB5 Manuel d'utilisateur télécharger pdf (Page 32)

Firewall

NetComm NB5 Ethernet/USB Modem Router YML717 Rev1

32 www.netcomm.com.au

The Default Setting of the NB5 does not provided access from the Internet to any services hosted on

the LAN. In other words, by default the firewall function is fully enabled and the only incoming

packets allowed are those elicited by a request from a LAN client.

The NB5 Access Control function allows selective access to services through the Firewall,

categorised by service type (Web, FTP, Telnet, etc) and optionally filtered by IP address. So, for

example, you are able to provide Telnet access to your LAN to anonymous users, or for a particular

IP address, or for a list of IP addresses.

The DMZ configuration directs all anonymous internet traffic to an IP address which you can

allocate to a computer dedicated to that purpose, thereby providing another controlled method of

providing access through the firewall.

Finally, IP filtering provides a fine-grained method for controlling the flow of data to and from the

Internet and also between LAN clients.

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Netcom NB5 Manuel d'utilisateur Page 32